//
//  Teacher.h
//  练习
//
//  Created by dllo on 16/2/25.
//  Copyright © 2016年 Apon. All rights reserved.
//

#import "Person.h"

@interface Teacher : Person
{
    NSString *_class;
}
-(void)setClass:(NSString *)class;
- (NSString *)class;
-(void)sayHi;

@end
